Wankel (Rotary) engines are not more complex, just more complicated. It only has a handfull of moving parts. Its a simple concept that it hard to understand compared to the standard OTTO cycle engine... Two rotors spin on an eccentric shaft that has 1/3 the amount of teeth as the rotor, which makes for a 3:1 increase. The shaft spins three times for every single revoluton of the rotor. When the rotor spins, it wobbles around this shaft in a way that causes it to compress the air fuel mixture. I will try to find a vid. you have to see to understand.Originally Posted by chituntang
heres a vid. Its a little crappy, but the general idea is expressed well
http://www.keveney.com/Wankel.html